Top critical review
12 people found this helpful
Bad materials in manufacturing -- rusting terminals
on September 19, 2016
This ultra life 10 year smoke alarm battery works for a few years, for sure. However, I purchased several, about half of which, in original packaging after two years, have a rusted positive terminal. These have resided in an conditioned indoor environment (air conditioned/heated home). This rusting didn't start until after the 1 year warranty expired.
If the battery didn't rust (poor materials in manufacturing), it would be a good battery. As it is, it is an expensive rusty piece of junk.